Top Definition
The area between being awake and asleep. Consisting of eyes closed, body semi to fully relaxed, and still hearing things going on around you. This sleep normally happens at school or some other dull location/event. Semi-sleep is not long, typically lasting no more than 30 minutes.
Michael woke up after 15 minutes of semi-sleep, feeling slightly better than when he fell asleep.
by Stauder March 27, 2009

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A sleep that induces visual and audio hallucinations, mostly closed eye, absolutely similar to dreaming, but if something makes you scared, you jump, and shake out of the sleep.
he jumped out of his semi-sleep
by imalinuxfreak November 12, 2007

The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt